estes family in keokuk iowa//kentucky??

i'm related to a john estes (wife is effie may knight)whose dad was william estes and mom was sarah ruby. on the family search site it has his siblings getting married and the dads name changes between william peter, or william f. or peter estes. i'm pretty sure it's the same guy though. on some pages like find a grave (william pete estes) says he was born 1848 in kentucky, but i have not found proof of that. his grave stone just says he died 1886. if anyone knows is related or has any info on this estes family please let me know. thanks! :)